Bacteria Morphology
The cell wall of

gram-negative bacteria are thicker than gram-positive bacteria
both have same thickness but composition is different
gram-positive bacteria are thicker than gram-negative bacteria
none of these

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Bacteria Morphology
Gram positive cells have a

thick capsule that traps the crystal violet stain
second outer membrane that helps to retain the crystal violet stain
periplasmic space that traps the crystal violet
multiple layer of peptidoglycan that helps to retain the crystal violet stain

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